<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        html,body{
            width: 100%;
            height: 100%;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        ul{
            width: 600px;
            height: 300px;
            list-style: none;
            display: flex;
            justify-content: space-around;
            align-items: center;
            border: 1px solid black;
        }
        li{
            width: 80px;
            height: 80px;
            border: 1px solid green;
            border-radius: 50px;
            display: flex;
            font-size: larger;
            justify-content: center;
            align-items: center;

            transition: all 0.2s linear;
        }
        li:hover{
            transform: scale(1.2);
        }
    </style>
</head>
<body>
    <ul>
        <li>1</li>
        <li>2</li>
        <li>3</li>
        <li>4</li>
        <li>5</li>
    </ul>
</body>
</html>